Vulnerability Details : CVE-2020-1946

In Apache SpamAssassin before 3.4.5, malicious rule configuration (.cf) files can be configured to run system commands without any output or errors. With this, exploits can be injected in a number of scenarios. In addition to upgrading to SA version 3.4.5, users should only use update channels or 3rd party .cf files from trusted places.

Published 2021-03-25 10:15:12

Updated 2022-07-30 03:46:45

Source Apache Software Foundation

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-1946

Probability of exploitation activity in the next 30 days: 1.37%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 85 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2020-1946

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
10.0	HIGH	AV:N/AC:L/Au:N/C:C/I:C/A:C	10.0	10.0	nvd@nist.gov
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	nvd@nist.gov
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2020-1946

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Assigned by:
- nvd@nist.gov (Primary)
- security@apache.org (Secondary)

References for CVE-2020-1946

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NKAXYBKBMQOLIW6UKASJCAZRBOIYS4RL/

[SECURITY] Fedora 32 Update: spamassassin-3.4.5-1.fc32 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7V2SBVTKVLFFT36ECJQ7TQ7KAQCQZDRZ/

[SECURITY] Fedora 34 Update: spamassassin-3.4.5-1.fc34 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://www.debian.org/security/2021/dsa-4879

Debian -- Security Information -- DSA-4879-1 spamassassin
Third Party Advisory
https://s.apache.org/3r1wh

[CVE-2020-1946] Apache SpamAssassin malicious rule configuration (.cf) files can be configured to run system commands
Mailing List;Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JFBFRIG5TX23NF4ND6OAKKY7I6TLRCCP/

[SECURITY] Fedora 33 Update: spamassassin-3.4.5-1.fc33 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00000.html

[SECURITY] [DLA 2615-1] spamassassin security update
Mailing List;Third Party Advisory
https://security.gentoo.org/glsa/202105-26

SpamAssassin: Arbitrary command execution (GLSA 202105-26) — Gentoo security
Third Party Advisory

Products affected by CVE-2020-1946

Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Matching versions
Apache » Spamassassin
Versions before (<) 3.4.5
cpe:2.3:a:apache:spamassassin:*:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 32
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 33
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Matching versions